UPDATE: As of Windows 10 release 1703 Windows now has a built in USB Audio Class 2.0 driver; a driver download and install is no longer required to use the Dacamp L1.
More information can be found here.

Dacamp L1 driver (Windows)

Dacamp L1 - Install and operating instructions (Windows)

Download the drivers from the above link, extract the folder and open the file to begin installation. Close any running applications and click 'Next' to continue:

Confirm the install directory, and click 'Install' to begin installation:

To complete installation, make sure that the Dacamp device has been disconnected, and click 'Yes' to continue.

After installation has been confirmed, connect the Dacamp and turn the power on. Navigate to audio device settings; either by right-clicking the sound icon in the system tray and selecting 'Playback devices':

or by pressing 'Windows' and 'X', choosing 'Control Panel' and navigating to 'Sound'/'Sounds and Audio Devices'.